/* Emoji Runner — Marketing Site */

:root {
  --bg-0: #06051a;
  --bg-1: #0a0820;
  --bg-2: #14102e;
  --bg-3: #1d1542;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.10);
  --border-2: rgba(255, 255, 255, 0.18);
  --text: #ffffff;
  --text-dim: rgba(255, 255, 255, 0.70);
  --text-faint: rgba(255, 255, 255, 0.45);
  --accent: #6BD9FF;
  --accent-2: #B388FF;
  --accent-glow: rgba(107, 217, 255, 0.45);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --content: 1180px;
  --header-h: 72px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Space Grotesk", -apple-system, BlinkMacSystemFont, "SF Pro Display", system-ui, sans-serif;
  background: radial-gradient(ellipse at top, var(--bg-2) 0%, var(--bg-0) 60%, #000 100%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

/* ===== Background ===== */
.bg-stars {
  position: fixed; inset: 0; pointer-events: none; z-index: -2;
  background-image:
    radial-gradient(1px 1px at 12% 22%, #fff 100%, transparent),
    radial-gradient(1px 1px at 28% 78%, #fff 100%, transparent),
    radial-gradient(1.5px 1.5px at 45% 35%, #fff 100%, transparent),
    radial-gradient(1px 1px at 62% 65%, #fff 100%, transparent),
    radial-gradient(2px 2px at 75% 18%, #fff 100%, transparent),
    radial-gradient(1px 1px at 88% 52%, #fff 100%, transparent),
    radial-gradient(1px 1px at 8% 88%, #fff 100%, transparent),
    radial-gradient(1.5px 1.5px at 35% 55%, rgba(255,255,255,0.7) 100%, transparent),
    radial-gradient(1px 1px at 55% 92%, #fff 100%, transparent),
    radial-gradient(1px 1px at 92% 88%, #fff 100%, transparent);
  background-size: 1600px 1600px;
  background-repeat: repeat;
  opacity: 0.7;
}

.bg-glow {
  position: fixed; pointer-events: none; z-index: -1;
  width: 800px; height: 800px; border-radius: 50%;
  filter: blur(140px);
}
.bg-glow-1 {
  top: -200px; right: -150px;
  background: radial-gradient(circle, rgba(179,136,255,0.35), transparent 60%);
}
.bg-glow-2 {
  bottom: -200px; left: -200px;
  background: radial-gradient(circle, rgba(107,217,255,0.30), transparent 60%);
}

/* ===== Typography ===== */
h1, h2, h3, h4 { letter-spacing: -0.02em; line-height: 1.05; font-weight: 600; }
h1 { font-size: clamp(2.6rem, 6vw, 4.8rem); font-weight: 700; letter-spacing: -0.03em; }
h2 { font-size: clamp(2rem, 4.5vw, 3.4rem); font-weight: 700; }
h3 { font-size: 1.35rem; font-weight: 600; }
h4 { font-size: 1.1rem; font-weight: 600; }

p { color: var(--text-dim); }
.lede { font-size: clamp(1.05rem, 1.4vw, 1.25rem); color: var(--text-dim); max-width: 540px; }
.center { text-align: center; margin-left: auto; margin-right: auto; }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 18px;
}

.grad-text {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

a { color: var(--accent); text-decoration: none; }

/* ===== Header / Nav ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 32px;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: rgba(6, 5, 26, 0.55);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex; align-items: center; gap: 12px;
  color: var(--text); font-weight: 700; letter-spacing: -0.01em;
}
.brand img { border-radius: 7px; }
.nav-links { display: flex; gap: 28px; }
.nav-links a {
  color: var(--text-dim); font-size: 0.95rem; font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

.nav-cta {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0a0820 !important;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  box-shadow: 0 0 24px var(--accent-glow);
  transition: transform 0.15s, box-shadow 0.2s;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 0 36px var(--accent-glow); }

/* ===== Hero ===== */
.hero {
  max-width: var(--content);
  margin: 0 auto;
  padding: 80px 32px 100px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-copy h1 { margin-bottom: 22px; }
.hero-copy .lede { margin-bottom: 32px; max-width: 480px; }

.cta-row { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; margin-bottom: 28px; }
.ghost-cta {
  color: var(--text-dim);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s, transform 0.2s;
}
.ghost-cta:hover { color: var(--text); transform: translateX(3px); }

.appstore {
  display: inline-block;
  transition: transform 0.15s, filter 0.2s;
}
.appstore:hover { transform: translateY(-2px); filter: drop-shadow(0 8px 24px rgba(107,217,255,0.30)); }
.appstore svg { display: block; }
.appstore.big svg { filter: drop-shadow(0 8px 24px rgba(0,0,0,0.4)); }

.badges { display: flex; flex-wrap: wrap; gap: 8px; }
.badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-dim);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 999px;
}

/* Phone mockup */
.hero-phone {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.phone-frame {
  width: 320px;
  aspect-ratio: 1290 / 2796;
  border-radius: 48px;
  padding: 12px;
  background: linear-gradient(145deg, #1a1530, #050414);
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.08) inset,
    0 30px 80px rgba(0,0,0,0.6),
    0 0 80px rgba(107,217,255,0.20);
  overflow: hidden;
  position: relative;
  transform: rotate(-2deg);
}
.phone-frame img {
  width: 100%; height: 100%; display: block;
  border-radius: 38px;
  object-fit: cover;
}

.floater {
  position: absolute;
  pointer-events: none;
  filter: drop-shadow(0 6px 16px rgba(0,0,0,0.5));
  animation: bob 4s ease-in-out infinite;
}
.floater img { display: block; width: 100%; height: auto; }
.floater-rocket {
  top: 8%;
  right: -10%;
  width: 110px;
  transform: rotate(15deg);
  animation-delay: 0s;
}
.floater-diamond {
  bottom: 12%;
  left: -8%;
  width: 80px;
  animation-delay: 1.5s;
  filter: drop-shadow(0 0 24px rgba(107,217,255,0.6));
}

@keyframes bob {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-12px) rotate(-3deg); }
}
.floater-rocket {
  animation-name: bob-rocket;
}
@keyframes bob-rocket {
  0%, 100% { transform: translateY(0) rotate(15deg); }
  50% { transform: translateY(-18px) rotate(20deg); }
}

/* ===== Features ===== */
.features {
  max-width: var(--content);
  margin: 0 auto;
  padding: 80px 32px;
  text-align: center;
}
.features h2 { margin-bottom: 18px; }
.features .lede { margin-bottom: 56px; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: left;
}

.feature-card {
  background: linear-gradient(160deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  padding: 30px 26px;
  border-radius: var(--radius-lg);
  transition: transform 0.25s, border-color 0.25s, background 0.25s;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-2);
  background: linear-gradient(160deg, rgba(255,255,255,0.10), rgba(255,255,255,0.04));
}
.feature-icon {
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  font-size: 32px;
  background: rgba(107,217,255,0.10);
  border: 1px solid rgba(107,217,255,0.20);
  border-radius: 14px;
  margin-bottom: 20px;
}
.feature-icon img { width: 36px; height: 36px; object-fit: contain; }
.feature-card h3 { margin-bottom: 10px; }
.feature-card p { font-size: 0.95rem; color: var(--text-dim); }

/* ===== Gameplay shots ===== */
.gameplay {
  max-width: var(--content);
  margin: 0 auto;
  padding: 80px 32px;
  text-align: center;
}
.gameplay h2 { margin-bottom: 56px; }

.shots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: start;
}
.shot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}
.phone-frame.small {
  width: 260px;
  aspect-ratio: 1290 / 2796;
  border-radius: 36px;
  padding: 8px;
  transform: none;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.08) inset,
    0 20px 50px rgba(0,0,0,0.5);
  transition: transform 0.3s;
}
.phone-frame.small img { border-radius: 28px; }
.shot:hover .phone-frame.small { transform: translateY(-6px) scale(1.02); }

.shot figcaption {
  max-width: 240px;
  text-align: center;
}
.shot figcaption h4 { margin-bottom: 6px; color: var(--text); }
.shot figcaption p { color: var(--text-dim); font-size: 0.92rem; }

/* ===== Download ===== */
.download {
  max-width: var(--content);
  margin: 40px auto 80px;
  padding: 0 32px;
}
.download-card {
  background: linear-gradient(135deg, rgba(107,217,255,0.10), rgba(179,136,255,0.08));
  border: 1px solid var(--border-2);
  border-radius: 32px;
  padding: 70px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.download-card::before {
  content: ""; position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(0,0,0,0.4) 100%);
  pointer-events: none;
}
.download-card h2 { margin-bottom: 18px; }
.download-card .lede { margin: 0 auto 36px; max-width: 520px; }
.fineprint { font-size: 0.82rem; color: var(--text-faint); margin-top: 24px; }

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 40px;
  padding: 40px 32px;
}
.footer-inner {
  max-width: var(--content);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-brand {
  display: flex; align-items: center; gap: 14px;
}
.footer-brand img { border-radius: 9px; }
.footer-title { font-weight: 600; color: var(--text); }
.footer-sub { font-size: 0.85rem; color: var(--text-faint); }
.footer-links { display: flex; gap: 28px; }
.footer-links a {
  color: var(--text-dim);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--text); }

/* ===== Hamburger button (hidden on desktop) ===== */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 60;
  -webkit-tap-highlight-color: transparent;
}
.hamburger-icon,
.hamburger-icon::before,
.hamburger-icon::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.2s ease;
  position: relative;
}
.hamburger-icon::before,
.hamburger-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 24px;
}
.hamburger-icon::before { top: -7px; }
.hamburger-icon::after  { top:  7px; }

/* X state */
.hamburger[aria-expanded="true"] .hamburger-icon {
  background: transparent;
}
.hamburger[aria-expanded="true"] .hamburger-icon::before {
  top: 0;
  transform: rotate(45deg);
}
.hamburger[aria-expanded="true"] .hamburger-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .nav { padding: 0 20px; }
  .hamburger { display: block; }
  .nav-cta { display: none; }

  /* Mobile overlay menu */
  .nav-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0;
    position: fixed;
    inset: 0;
    z-index: 55;
    background: rgba(6, 5, 26, 0.92);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
  }
  .nav-links.open {
    opacity: 1;
    visibility: visible;
  }
  .nav-links a {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dim);
    padding: 18px 24px;
    transition: color 0.2s, transform 0.2s;
    transform: translateY(12px);
    opacity: 0;
  }
  .nav-links.open a {
    transform: translateY(0);
    opacity: 1;
  }
  .nav-links.open a:nth-child(1) { transition-delay: 0.06s; }
  .nav-links.open a:nth-child(2) { transition-delay: 0.12s; }
  .nav-links.open a:nth-child(3) { transition-delay: 0.18s; }
  .nav-links.open a:nth-child(4) { transition-delay: 0.24s; }
  .nav-links a:hover { color: var(--text); }

  /* Show CTA inside overlay on mobile */
  .nav-links::after {
    content: "Get the App →";
    display: block;
    margin-top: 18px;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #0a0820;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 999px;
    box-shadow: 0 0 24px var(--accent-glow);
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.35s ease 0.30s, transform 0.35s ease 0.30s;
    pointer-events: none;
  }
  .nav-links.open::after {
    opacity: 1;
    transform: translateY(0);
  }

  /* Prevent body scroll when menu is open */
  body.menu-open { overflow: hidden; }

  .hero { grid-template-columns: 1fr; padding: 50px 20px 60px; gap: 50px; text-align: center; }
  .hero-copy .lede { margin-left: auto; margin-right: auto; }
  .cta-row { justify-content: center; }
  .badges { justify-content: center; }

  .phone-frame { width: 280px; }
  .floater-rocket { right: 5%; width: 90px; }
  .floater-diamond { left: 0%; width: 60px; }

  .feature-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .features, .gameplay { padding: 60px 20px; }

  .shots { grid-template-columns: 1fr; gap: 50px; }
  .phone-frame.small { width: 240px; }

  .download-card { padding: 50px 24px; }
  .download { padding: 0 20px; }

  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
  h1 { font-size: 2.4rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .phone-frame { width: 240px; padding: 10px; border-radius: 40px; }
  .phone-frame img { border-radius: 32px; }
}

/* ===== Reveal on scroll ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }